Tunnel top watering equipment for tunnel construction

Abstract

The invention discloses tunnel top watering equipment for tunnel construction, and particularly relates to the field of tunnel construction.The tunnel top watering equipment comprises a maintenance mechanism arranged in a tunnel body, a guide rail is installed in the tunnel body, a secondary lining layer is arranged at the top end in the tunnel body, and a spraying mechanism is installed on the maintenance mechanism; a front baffle mechanism is arranged on one side of the spraying mechanism, a rear baffle mechanism is arranged on the side, away from the front baffle mechanism, of the spraying mechanism, and the maintenance mechanism drives the spraying mechanism, the front baffle mechanism and the rear baffle mechanism to slide above the guide rail. The spraying mechanism comprises a mounting seat, a spraying head is mounted on the mounting seat, and the spraying head is obliquely arranged in the direction of the rear baffle mechanism; the front baffle mechanism comprises a vertical plate. Strong wind in the tunnel body is prevented from blowing to the spraying head from the front and the rear, uneven water spraying caused by the fact that the spraying area of the spraying head deviates from the original position is avoided, and the water spraying maintenance effect on the secondary lining layer can be guaranteed in the strong wind weather.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction, and more specifically, to a tunnel top watering device for tunnel construction. Background Art

[0002] A tunnel is an engineering structure buried in the ground, which is divided into traffic tunnels, municipal tunnels, mine tunnels, etc. Among them, traffic tunnels mostly adopt shallow-buried tunnels or open-cut methods for construction. For example, subway station tunnels. In order to adapt to the square space layout of the concourse, platform, equipment rooms and passages of the subway station and maximize the space utilization efficiency, the cross-sectional shape of the subway station tunnel is generally rectangular.

[0003] After the secondary lining construction of the subway station tunnel (hereinafter referred to as the station tunnel), in order to prevent the occurrence of lining cracks, it is necessary to sprinkle water on the concrete poured for the secondary lining to ensure the strength and durability of the station tunnel structure. Since the height of the station tunnel top is relatively high, the prior art uses a tunnel spraying maintenance trolley to sprinkle water on the top of the station tunnel.

[0004] The prior art tunnel spraying maintenance trolley mainly consists of a movable vehicle frame, a height / span adjustment mechanism and a spraying system. The adjustment mechanism can adjust the height and span of the spraying system to adapt to tunnel sections of different sizes. The vehicle frame drives the adjustment mechanism and the spraying system to move continuously along the direction of the station tunnel at a constant speed for continuous watering. The main structure of the spraying system is a nozzle. In order to prevent the muddy water on the top of the station tunnel from dripping down onto the nozzle, the nozzle needs to be inclined backward by an angle of 15-30 degrees.

[0005] In windy weather, when the external strong wind is in the same direction as the direction of the station tunnel, the strong wind forms a "wind tunnel effect" through the tunnel entrance, thereby intensifying the wind speed inside the station tunnel to generate strong wind. Generally, the duration of strong wind is relatively short. Since the vehicle frame drives the nozzle to move at a constant speed, when the strong wind blows in the same direction as the moving direction of the vehicle frame, that is, in the downwind state, the spraying area of the nozzle changes forward instantly, resulting in the failure of the rear spraying area to be fully watered. When the strong wind blows in the opposite direction to the moving direction of the vehicle frame, that is, in the upwind state, the spraying area of the nozzle changes backward instantly. During the duration of the strong wind, although the spraying area of the nozzle changes backward, with the constant movement of the vehicle frame, the front spraying area will not be missed. However, when the strong wind stops, the spraying of the nozzle instantly returns forward to the original spraying area, resulting in the failure of the rear of the original spraying area to be fully watered. Therefore, the prior art tunnel spraying maintenance trolley will change the watering trajectory of the nozzle for a short time in strong wind weather, causing the spraying area of the nozzle to deviate from the original position, resulting in uneven watering and thus affecting the maintenance effect. Summary of the Invention

[0006] A tunnel top watering device for tunnel construction provided by the present invention aims to solve the following problem: The existing tunnel spraying and curing trolley will change the watering trajectory of the nozzle in a short time in strong wind weather, causing the spraying area of the nozzle to deviate from the original position, resulting in uneven watering and thus affecting the curing effect.

[0007] To achieve the above object, the present invention provides the following technical solution: A tunnel top watering device for tunnel construction includes a curing mechanism arranged inside the tunnel body. A guiding track is installed inside the tunnel body, and a secondary lining layer is provided at the inner top end of the tunnel body. A spraying mechanism is installed on the curing mechanism. A front baffle mechanism is arranged on one side of the spraying mechanism, and a rear baffle mechanism is arranged on the side of the spraying mechanism away from the front baffle mechanism. The curing mechanism drives the spraying mechanism, the front baffle mechanism and the rear baffle mechanism to slide along the upper side of the guiding track; The spraying mechanism includes a mounting seat, and a spraying head is installed on the mounting seat, and the spraying head is inclined towards the rear baffle mechanism; The front baffle mechanism includes a vertical plate, a horizontal plate is installed on the vertical plate, an elastic pad is installed on the horizontal plate, and the top of the elastic pad is in sliding contact with the lower surface of the secondary lining layer; The rear baffle mechanism includes a stopper, and an elastic block assembly is installed on the stopper, and the top of the elastic block assembly is in sliding contact with the lower surface of the secondary lining layer.

[0008] In a preferred embodiment, the curing mechanism includes a frame assembly, a wheel assembly is installed at the bottom of the frame assembly, the wheel assembly slides along the upper side of the guiding track, a water tank is installed on the frame assembly, and the water tank is connected to the spraying head through a pipeline.

[0009] In a preferred embodiment, a moving platform is installed on the frame assembly, a guiding component is installed between the moving platform and the frame assembly, and a linear driver one is installed between the frame assembly and the moving platform.

[0010] In a preferred embodiment, the rear baffle mechanism further includes a mounting column, the stopper is installed at the top of the mounting column, an inclined block is arranged on one side of the stopper, an electric control box is installed on the mounting column, a linear driver two is arranged on one side of the electric control box, and the output end of the linear driver two is fixedly connected to the elastic block assembly.

[0011] In a preferred embodiment, a scraping component is installed on the side of the front baffle mechanism away from the horizontal plate. The scraping component includes a collection box, a funnel is installed on the collection box, a scraping plate is detachably installed inside the funnel, and the top of the scraping plate is located outside the funnel. The collection box is fixedly connected to the vertical plate through a fixing plate.

[0012] In a preferred embodiment, a flat pad is arranged in the middle of the elastic pad, a top plate penetrates through the inside of the flat pad, an extension belt is fixedly arranged on the flat pad, and the extension belt is sleeved on the top of the top plate. An air blowing hole is opened on the side of the elastic pad away from the spraying mechanism, and an elastic part one is fixedly arranged between the top plate and the horizontal plate.

[0013] In a preferred embodiment, a negative pressure assembly is provided on one side of the stop block. The negative pressure assembly includes a negative pressure box. An elastic member II is fixedly provided between the negative pressure box and the mounting column, and the elastic member II pushes the negative pressure box to closely adhere to the surface of the secondary lining layer.

[0014] In a preferred embodiment, the elastic block assembly includes a sponge block. A bottom plate is fixedly provided at the bottom of the sponge block, and a heater is installed at the bottom of the bottom plate, and the heater is electrically connected to the electric control box.

[0015] In a preferred embodiment, a diversion seat is installed on the negative pressure box, a closing seat is installed on the diversion seat, a negative pressure port is opened inside the closing seat, and a closing pad is installed on the top of the closing seat.

[0016] In a preferred embodiment, a collection bucket is provided between the spraying mechanism and the rear baffle mechanism. The opening of the collection bucket faces upward, and the collection bucket is located below the lower end of the inclined block.

[0017] The beneficial effects of the present invention are as follows: By arranging the spraying mechanism between the front baffle mechanism and the rear baffle mechanism, and making the elastic pad closely adhere to the lower surface of the secondary lining layer, and the elastic block assembly closely adhere to the lower surface of the secondary lining layer, the strong wind in the tunnel body can be blocked from blowing towards the spray head from the front and the rear, avoiding uneven water spraying caused by the deviation of the spraying area of the spray head from the original position. In windy weather, the water spraying and curing effect on the secondary lining layer can be guaranteed.

[0018] By scraping the dust and slag on the lower surface of the secondary lining layer with the top end of the scraper, the dust and slag attached to the lower surface of the secondary lining layer can be cleaned as a whole, and the concave connecting seam can be cleaned internally, reducing the dust and slag on the curing surface of the secondary lining layer, making the water fully contact and penetrate the curing surface, and ensuring the water spraying and curing effect on the secondary lining layer.

[0019] By covering the periphery of the closing seat with the closing pad and starting the air extraction pump inside the negative pressure box, the clear water inside the connecting seam is extracted through the negative pressure port, and the accumulated water inside the connecting seam can be extracted, trying to ensure that the water evaporation speed on the surface of the secondary lining layer and the connecting seam is synchronous. When spraying the concrete curing agent subsequently, it is easier to form a curing agent film at the connecting seam. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic side sectional view of the tunnel body of the present invention.

[0022] Figure 3 It is a schematic side view of the structure of the curing mechanism of the present invention.

[0023] Figure 4 Side schematic view of the spraying mechanism structure of the present invention.

[0024] Figure 5 Side sectional view of the front baffle mechanism of the present invention.

[0025] Figure 6 Schematic view of the scraping component structure of the present invention.

[0026] Figure 7 Side schematic view of the rear baffle mechanism structure of the present invention.

[0027] Figure 8 Side sectional view of the stop block of the present invention.

[0028] Figure 9 Schematic view of the elastic block assembly structure of the present invention.

[0029] Figure 10 Side schematic view of the negative pressure component structure of the present invention.

[0030] Figure 11 Schematic view of the closed seat structure of the present invention.

[0031] Reference numerals are: 1, tunnel body; 11, secondary lining layer; 12, joint; 2, maintenance mechanism; 21, frame assembly; 22, wheel assembly; 23, water tank; 24, mobile platform; 25, guiding assembly; 26, linear actuator I; 3, guiding track; 4, spraying mechanism; 41, mounting seat; 42, spray head; 5, front baffle mechanism; 51, scraping component; 511, collection box; 512, funnel; 513, scraper; 514, fixing plate; 52, vertical plate; 53, horizontal plate; 54, pump seat; 55, elastic pad; 551, flat pad; 552, extension belt; 553, air blowing hole; 56, top plate; 561, air blowing port; 562, elastic member I; 6, rear baffle mechanism; 61, stop block; 611, inclined block; 62, negative pressure component; 621, negative pressure box; 622, elastic member II; 623, diversion seat; 624, closed seat; 625, negative pressure port; 626, sealing pad; 63, elastic block assembly; 631, sponge block; 632, bottom plate; 633, heater; 64, mounting column; 65, electric control box; 66, linear actuator II; 7, collection bucket. Detailed implementation manners

[0032] The following further describes the present application in detail with reference to the accompanying drawings. It is necessary to point out here that the following specific implementation manners are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0033] Refer to the accompanying drawings of the specificationFigures 1 to 5 , a tunnel top sprinkler device for tunnel construction, including a maintenance mechanism 2 arranged inside the tunnel body 1. A guiding track 3 is installed inside the tunnel body 1. A secondary lining layer 11 is provided at the inner top end of the tunnel body 1. A spraying mechanism 4 is installed on the maintenance mechanism 2. A front baffle mechanism 5 is arranged on one side of the spraying mechanism 4. A rear baffle mechanism 6 is arranged on the side of the spraying mechanism 4 away from the front baffle mechanism 5. The maintenance mechanism 2 drives the spraying mechanism 4, the front baffle mechanism 5 and the rear baffle mechanism 6 to slide above the guiding track 3; The spraying mechanism 4 includes a mounting seat 41, and a spray head 42 is installed on the mounting seat 41, and the spray head 42 is inclined towards the rear baffle mechanism 6; The front baffle mechanism 5 includes a vertical plate 52, a horizontal plate 53 is installed on the vertical plate 52, an elastic pad 55 is installed on the horizontal plate 53, and the top of the elastic pad 55 is in sliding contact with the lower surface of the secondary lining layer 11; The rear baffle mechanism 6 includes a stop block 61, and an elastic block assembly 63 is installed on the stop block 61, and the top of the elastic block assembly 63 is in sliding contact with the lower surface of the secondary lining layer 11.

[0034] It should be noted that both ends of the elastic pad 55 are closed, both sides of the elastic pad 55 are arc-shaped surfaces, the middle part of the elastic pad 55 is a flat surface, and the elastic block assembly 63 is a sponge block member.

[0035] In this embodiment, the implementation scenario is specifically as follows: First, lay the guiding track 3 inside the tunnel body 1, move the maintenance mechanism 2 onto the guiding track 3, and make the maintenance mechanism 2 move along the direction of the guiding track 3. The front baffle mechanism 5 is in front of the moving direction of the maintenance mechanism 2. The spraying mechanism 4 is arranged between the front baffle mechanism 5 and the rear baffle mechanism 6. By the elastic pad 55 closely adhering to the lower surface of the secondary lining layer 11 and the elastic block assembly 63 closely adhering to the lower surface of the secondary lining layer 11, strong winds inside the tunnel body 1 can be blocked from blowing towards the spray head 42 from the front and the rear, avoiding uneven water spraying caused by the spraying area of the spray head 42 deviating from the original position. In windy weather, the water spraying and maintenance effect on the secondary lining layer 11 can be guaranteed.

[0036] Furthermore, the maintenance mechanism 2 includes a frame assembly 21. A wheel assembly 22 is installed at the bottom of the frame assembly 21. The wheel assembly 22 slides above the guiding track 3. A water tank 23 is installed on the frame assembly 21, and the water tank 23 is connected to the spray head 42 through a pipeline. A moving platform 24 is installed on the frame assembly 21. A guiding component 25 is installed between the moving platform 24 and the frame assembly 21. A linear actuator one 26 is installed between the frame assembly 21 and the moving platform 24.

[0037] It should be noted that the frame assembly 21 includes an upper flat plate and a lower flat plate. Four sets of wheel assemblies 22 are provided, and the wheel assemblies 22 are equipped with drive mechanisms. The wheel assemblies 22 and the drive mechanisms are existing mature technologies, which can drive the wheel assemblies 22 to drive the frame assembly 21 to move. The water tank 23 is installed above the lower flat plate, the mobile platform 24 is located above the upper flat plate, and the guiding assembly 25 is arranged between the upper flat plate and the lower flat plate. The guiding assembly 25 is a common telescopic column member, including an inner column and an outer sleeve. The inner column is connected to the mobile platform 24, and the inner column telescopically moves inside the outer sleeve to play a guiding role. The output end of the linear actuator 26 drives the mobile platform 24 to move vertically.

[0038] Furthermore, a pump base 54 is installed between the vertical plate 52 and the horizontal plate 53. A top plate 56 is installed inside the elastic pad 55. The pump base 54 and the top plate 56 are connected by a pipeline. Air blowing ports 561 are opened at both ends of the top plate 56.

[0039] It should be noted that an air pump is installed inside the pump base 54. The length of the top plate 56 is less than the length of the elastic pad 55, and the top plate 56 is located in the middle of the elastic pad 55. The pump base 54 and the top plate 56 are connected by a pipeline.

[0040] Furthermore, the rear baffle mechanism 6 further includes a mounting post 64. The stop block 61 is installed at the top of the mounting post 64. An inclined block 611 is provided on one side of the stop block 61. An electric control box 65 is installed on the mounting post 64. A linear actuator 66 is provided on one side of the electric control box 65. The output end of the linear actuator 66 is fixedly connected to the elastic block assembly 63.

[0041] It should be noted that the bottom ends of the vertical plate 52 and the mounting post 64 are both provided with support seats. One side of the support seat is open, which is convenient for the vertical plate 52 and the mounting post 64 to be turned and folded. When the vertical plate 52 and the mounting post 64 are in the vertical state, they can be positioned by screws. The inclined surface of the inclined block 611 is away from the elastic block assembly 63, and the elastic block assembly 63 moves vertically inside the stop block 61.

[0042] In this embodiment, the implementation scenario is specifically as follows: The drive mechanism of the wheel assembly 22 can drive the wheel assembly 22 to drive the frame assembly 21 to move. Two sets of water tanks 23 are provided, which can provide water medium for the spraying mechanism 4. The mobile platform 24 is used to install the spraying mechanism 4, the front baffle mechanism 5 and the rear baffle mechanism 6. When the mobile platform 24 moves vertically, the guiding assembly 25 plays a guiding role. The linear actuator 26 drives the mobile platform 24 to move vertically. An air pump is installed inside the pump base 54 to introduce air flow into the top plate 56. The front of the spraying mechanism 4 is closed by the elastic pad 55. By driving the elastic block assembly 63 to extend by the linear actuator 66, the rear of the spraying mechanism 4 can be closed, ensuring that there is no strong wind interference in the front and rear of the spraying mechanism 4.

[0043] Refer to the attached drawings of the specificationFigure 5 and Figure 6 , dust and slag adhere to the lower surface of the secondary lining layer 11. After watering, the muddy water mixture formed by the combination of dust and slag will quickly drip. Excessive dust and slag will also block the water from penetrating into the interior of the secondary lining layer 11, thus affecting the watering and curing effect. Since there is a connecting seam 12 in the secondary lining layer 11, and dust and slag are more likely to accumulate inside the concave connecting seam 12. The top of the front baffle mechanism 5 is a flat surface and cannot clean the inside of the connecting seam 12, resulting in the connecting seam 12 being affected by excessive dust and slag accumulation and affecting the watering and curing.

[0044] To solve this problem, the following technical solution is also provided: A scraping assembly 51 is installed on the side of the front baffle mechanism 5 away from the cross plate 53. The scraping assembly 51 includes a collection box 511. A funnel 512 is installed on the collection box 511. A scraping plate 513 is detachably installed inside the funnel 512, and the top of the scraping plate 513 is located outside the funnel 512. The collection box 511 is fixedly connected to the vertical plate 52 through a fixing plate 514.

[0045] It should be noted that the collection box 511 is communicated with the funnel 512. The scraping assembly 51 is located at the very front of the entire curing mechanism 2. The top of the funnel 512 is an open mouth. The top end of the scraping plate 513 is a tip, and the top end of the scraping plate 513 abuts against the lower surface of the secondary lining layer 11. The scraping plate 513 is a soft elastic member.

[0046] Furthermore, a flat pad 551 is provided in the middle of the elastic pad 55. The top plate 56 passes through the inside of the flat pad 551. An extension belt 552 is fixedly provided on the flat pad 551, and the extension belt 552 is sleeved on the top of the top plate 56. An air blowing hole 553 is opened on the side of the elastic pad 55 away from the spraying mechanism 4. An elastic member 562 is fixedly provided between the top plate 56 and the cross plate 53.

[0047] It should be noted that the extension belt 552 is used to close the flat pad 551. The extension belt 552 is an elastic belt member. The length of the top plate 56 is less than the length of the elastic pad 55. The top plate 56 is located in the middle of the flat pad 551.

[0048] In this embodiment, the implementation scenario is specifically as follows: The top end of the scraping plate 513 is used to scrape the dust and slag on the lower surface of the secondary lining layer 11, the funnel 512 is used to receive the scraped dust and slag, and the dust and slag are collected inside the collection box 511. When the top plate 56 is opposite to the connection seam 12, the first elastic member 562 pushes the top end of the top plate 56 to extend outside the flat gasket 551. At this time, the top end of the top plate 56 presses against the extension belt 552 and enters the connection seam 12. The pump base 54 blows air into the connection seam 12 through the air blowing port 561 to clean the inside of the connection seam 12. When the maintenance mechanism 2 is moving, the pump base 54 is in an open state. When moving out of the connection seam 12, the top plate 56 is pressed back into the elastic gasket 55 through the extension belt 552. Under the blockage of the plane of the secondary lining layer 11, the extension belt 552 closes the flat gasket 551, and the air blown out from the air blowing port 561 flows to the air blowing hole 553, which can clean the dust and slag attached to the front surface of the elastic gasket 55, avoiding excessive accumulation of dust and slag at the front end of the elastic gasket 55. As a whole, it can clean the dust and slag attached to the lower surface of the secondary lining layer 11 and clean the concave connection seam 12 inside, reducing the dust and slag on the maintenance surface of the secondary lining layer 11, enabling water to fully contact and penetrate the maintenance surface, and ensuring the water spraying and maintenance effect on the secondary lining layer 11.

[0049] Refer to the attached drawings of the specification Figures 7 to 11 After the secondary lining layer 11 is water-sprayed and maintained, when the surface moisture of the secondary lining layer 11 slightly evaporates to a wet state, there is no visible water on the surface of the secondary lining layer 11 in the wet state. A concrete curing agent is evenly sprayed on the surface of the secondary lining layer 11. After the concrete curing agent forms a film, there is no need to sprinkle water for maintenance anymore. However, the shape of the connection seam 12 is concave, and more water is more likely to accumulate inside the connection seam 12, resulting in different evaporation rates of the moisture on the surfaces of the secondary lining layer 11 and the connection seam 12. When spraying the concrete curing agent subsequently, it is easy to fail to form a curing agent film due to the presence of visible water at the connection seam 12.

[0050] To solve this problem, the following technical solution is also provided: A negative pressure component 62 is provided on one side of the stop block 61. The negative pressure component 62 includes a negative pressure box 621. An elastic member two 622 is fixedly provided between the negative pressure box 621 and the mounting column 64, and the elastic member two 622 pushes the negative pressure box 621 to closely adhere to the surface of the secondary lining layer 11.

[0051] It should be noted that an air extraction pump is installed inside the negative pressure box 621, and the air extraction port of the air extraction pump is located at the top of the negative pressure box 621. The elastic member two 622 makes the negative pressure box 621 close to and press tightly against the secondary lining layer 11.

[0052] Furthermore, the elastic block assembly 63 includes a sponge block 631. A bottom plate 632 is fixedly provided at the bottom of the sponge block 631. A heater 633 is installed at the bottom of the bottom plate 632, and the heater 633 is electrically connected to the electric control box 65 It should be noted that the bottom plate 632 is a rigid heat-conducting plate, the heater 633 is an electric heating plate component of the prior art, and the power supply and remote control switch of the heater 633 are installed inside the electric control box 65.

[0053] Furthermore, a diversion seat 623 is installed on the negative pressure box 621, a sealing seat 624 is installed on the diversion seat 623, a negative pressure port 625 is opened inside the sealing seat 624, and a sealing gasket 626 is installed on the top of the sealing seat 624.

[0054] It should be noted that the connection seam 12 is covered by the diversion seat 623 and the sealing seat 624, and the periphery of the sealing seat 624 is blocked by the sealing gasket 626.

[0055] Furthermore, a collection bucket 7 is provided between the spraying mechanism 4 and the rear baffle mechanism 6. The opening of the collection bucket 7 faces upward, and the collection bucket 7 is located below the lower end of the inclined block 611.

[0056] It should be noted that the collection bucket 7 is located below the spraying area of the spray head 42 and is used to collect the muddy water mixture.

[0057] In this embodiment, the implementation scenario is specifically as follows: the water on the surface of the secondary lining layer 11 is spread evenly by the sponge block 631, so that the thickness of the water on the surface of the secondary lining layer 11 is uniform, which is convenient for the water evaporation positions to be synchronized as much as possible at the same time. When the sponge block 631 absorbs too much water, when the machine is stopped to add water to the water tank 23, by turning on the heater 633, the water evaporation inside the sponge block 631 can be accelerated, avoiding the depression of the sponge block 631 due to excessive water absorption and affecting the sealing effect. When the connection seam 12 corresponds to the negative pressure box 621 up and down, the periphery of the sealing seat 624 is blocked by the sealing gasket 626, and the air pump inside the negative pressure box 621 is started, and the clear water inside the connection seam 12 is pumped out through the negative pressure port 625, so that the accumulated water inside the connection seam 12 can be pumped out, and the water evaporation speed on the surfaces of the secondary lining layer 11 and the connection seam 12 is synchronized as much as possible. When spraying the concrete curing agent later, it is easier to form a curing agent film at the connection seam 12.

[0058] Working principle: First, lay the guiding track 3 inside the tunnel body 1, move the maintenance mechanism 2 onto the guiding track 3, and move the maintenance mechanism 2 along the direction of the guiding track 3. The front baffle mechanism 5 is in front of the moving direction of the maintenance mechanism 2, and the spraying mechanism 4 is arranged between the front baffle mechanism 5 and the rear baffle mechanism 6. By tightly attaching the elastic pad 55 to the lower surface of the secondary lining layer 11 and the elastic block assembly 63 to the lower surface of the secondary lining layer 11, the strong wind inside the tunnel body 1 can be blocked from blowing towards the spray head 42 from the front and the rear.

[0059] Second, scrape the dust and slag on the lower surface of the secondary lining layer 11 through the top end of the scraper 513, receive the scraped dust and slag through the funnel 512, and collect the dust and slag into the interior of the collection box 511.

[0060] Third, when the top plate 56 is opposite to the position of the connection seam 12, the first elastic member 562 pushes the top end of the top plate 56 to extend outside the flat gasket 551. At this time, the top end of the top plate 56 presses against the extension belt 552 and enters the interior of the connection seam 12. The pump base 54 blows air into the interior of the connection seam 12 through the air blowing port 561 to clean the interior of the connection seam 12.

[0061] Fourth, when the curing mechanism 2 is moving, the pump base 54 is in an open state. When moving out of the connection seam 12, the top plate 56 is pressed back into the elastic gasket 55 through the extension belt 552. Blocked by the plane of the secondary lining layer 11, the extension belt 552 seals the flat gasket 551, and the air blown out from the air blowing port 561 flows to the air blowing hole 553, which can clean the dust and slag attached to the front surface of the elastic gasket 55.

[0062] Fifth, spread the moisture on the surface of the secondary lining layer 11 evenly with the sponge block 631, so that the thickness of the moisture on the surface of the secondary lining layer 11 is uniform, which is convenient for the water evaporation at the sprinkling positions to be as synchronous as possible at the same time.

[0063] Sixth, when the sponge block 631 absorbs too much moisture, when the machine is stopped and water is added to the water tank 23, by turning on the heater 633, the evaporation of the moisture inside the sponge block 631 can be accelerated.

[0064] Seventh, when the connection seam 12 corresponds to the negative pressure box 621 up and down, block the periphery of the closing seat 624 with the sealing gasket 626, start the air extraction pump inside the negative pressure box 621, and extract the clear water inside the connection seam 12 through the negative pressure port 625, so that the accumulated water inside the connection seam 12 can be extracted, and try to ensure that the evaporation rates of the moisture on the surfaces of the secondary lining layer 11 and the connection seam 12 are synchronous.

[0065] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A tunnel top watering device for tunnel construction, including a maintenance mechanism (2) arranged inside the tunnel body (1), a guiding track (3) is installed inside the tunnel body (1), and a secondary lining layer (11) is provided at the inner top end of the tunnel body (1), characterized in that: A spraying mechanism (4) is installed on the maintenance mechanism (2). A front baffle mechanism (5) is provided on one side of the spraying mechanism (4), and a rear baffle mechanism (6) is provided on the side of the spraying mechanism (4) away from the front baffle mechanism (5). The maintenance mechanism (2) drives the spraying mechanism (4), the front baffle mechanism (5) and the rear baffle mechanism (6) to slide above the guiding track (3). The spraying mechanism (4) includes a mounting seat (41), and a spray head (42) is installed on the mounting seat (41), and the spray head (42) is inclined towards the rear baffle mechanism (6). The front baffle mechanism (5) includes a vertical plate (52), a horizontal plate (53) is installed on the vertical plate (52), an elastic pad (55) is installed on the horizontal plate (53), and the top of the elastic pad (55) is in sliding contact with the lower surface of the secondary lining layer (11). The rear baffle mechanism (6) includes a stopper (61), and an elastic block assembly (63) is installed on the stopper (61), and the top of the elastic block assembly (63) is in sliding contact with the lower surface of the secondary lining layer (11).

2. The tunnel top watering device for tunnel construction according to claim 1, characterized in that: The maintenance mechanism (2) includes a frame assembly (21), a wheel assembly (22) is installed at the bottom of the frame assembly (21), the wheel assembly (22) slides above the guiding track (3), a water tank (23) is installed on the frame assembly (21), and the water tank (23) is connected to the spray head (42) through a pipeline.

3. The tunnel top watering device for tunnel construction according to claim 2, characterized in that: A moving platform (24) is installed on the frame assembly (21), a guiding component (25) is installed between the moving platform (24) and the frame assembly (21), and a linear drive one (26) is installed between the frame assembly (21) and the moving platform (24).

4. A tunnel top watering device for tunnel construction according to claim 3, characterized in that: The rear baffle mechanism (6) further includes a mounting column (64), the stopper (61) is installed at the top of the mounting column (64), an inclined block (611) is provided on one side of the stopper (61), an electric control box (65) is installed on the mounting column (64), a linear drive two (66) is provided on one side of the electric control box (65), and the output end of the linear drive two (66) is fixedly connected to the elastic block assembly (63).

5. The tunnel top watering device for tunnel construction according to claim 4, characterized in that: A scraping component (51) is installed on the side of the front baffle mechanism (5) away from the horizontal plate (53). The scraping component (51) includes a collection box (511), a funnel (512) is installed on the collection box (511), a scraping plate (513) is detachably installed inside the funnel (512), and the top of the scraping plate (513) is located outside the funnel (512). The collection box (511) is fixedly connected to the vertical plate (52) through a fixing plate (514).

6. The tunnel top watering device for tunnel construction according to claim 5, characterized in that: A flat pad (551) is provided in the middle of the elastic pad (55). The top plate (56) penetrates through the inside of the flat pad (551). An extension belt (552) is fixedly provided on the flat pad (551), and the extension belt (552) is sleeved on the top of the top plate (56). An air blowing hole (553) is formed on one side of the elastic pad (55) away from the spraying mechanism (4). An elastic member one (562) is fixedly provided between the top plate (56) and the cross plate (53).

7. A tunnel top sprinkling device for tunnel construction according to claim 6, characterized in that: A negative pressure assembly (62) is provided on one side of the stopper (61). The negative pressure assembly (62) includes a negative pressure box (621). An elastic member two (622) is fixedly provided between the negative pressure box (621) and the mounting post (64), and the elastic member two (622) pushes the negative pressure box (621) to closely adhere to the surface of the secondary lining layer (11).

8. A tunnel top watering device for tunnel construction according to claim 7, characterized in that: The elastic block assembly (63) includes a sponge block (631). A bottom plate (632) is fixedly provided at the bottom of the sponge block (631). A heater (633) is installed at the bottom of the bottom plate (632), and the heater (633) is electrically connected to the electric control box (65).

9. The tunnel top watering device for tunnel construction according to claim 8, wherein: A diversion seat (623) is installed on the negative pressure box (621). A closed seat (624) is installed on the diversion seat (623). A negative pressure port (625) is formed inside the closed seat (624). A closed pad (626) is installed on the top of the closed seat (624).

10. A tunnel top watering device for tunnel construction according to claim 9, characterized in that: A collection bucket (7) is provided between the spraying mechanism (4) and the rear baffle mechanism (6). The opening of the collection bucket (7) faces upward, and the collection bucket (7) is located below the lower end of the inclined block (611).

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